彗星 Comet
Comet 6P/d'Arrest
2022/02/17 10:46:31(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2022/01/31 10:21:15(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2022/01/24 10:15:48(UT)
Toshihiko.Tanaka (Sky90 400mm ASI 2600)田中利彦


[Toshihiko.Tanaka (Nabari Mie Japan)]
≪三重県 名張市　田中利彦≫
2022/01/22 10:42:18(UT)
Toshihiko.Tanaka (Sky90 400mm ASI 2600)田中利彦


[Toshihiko.Tanaka (Nabari Mie Japan)]
≪三重県 名張市　田中利彦≫
2022/01/06 09:53:06(UT)
Toshihiko.Tanaka (Sky90 400mm ASI 2600)田中利彦


[Toshihiko.Tanaka (Nabari Mie Japan)]
≪三重県 名張市　田中利彦≫
2022/01/04 09:21:00(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2022/01/03 10:19:54(UT)
Toshihiko Ikemura (D345mmfl=1717mm BJ-52L)池村俊彦

[T.Ikemura Shinshiro Aichi JAPAN]
≪愛知県新城市　池村俊彦≫
2021/12/28 09:25:02(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/12/25 09:01:06(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/12/23 09:25:30(UT)
Toshihiko.Tanaka (Sky90 400mm ASI 2600)田中利彦


[Toshihiko.Tanaka (Nabari Mie Japan)]
≪三重県 名張市　田中利彦≫
2021/12/20 09:21:57(UT)
Toshihiko.Tanaka (Sky90 400mm ASI 2600)田中利彦


[Toshihiko.Tanaka (Nabari Mie Japan)]
≪三重県 名張市　田中利彦≫
2021/12/18 09:43:39(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/12/14 09:31:30(UT)
Toshihiko.Tanaka (TOA130 BJ-53C)田中利彦


[Toshihiko.Tanaka (Nabari Mie Japan)]
≪三重県 名張市　田中利彦≫
2021/12/13 09:00:10(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/12/09 09:14:09(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/12/02 11:46:33(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/11/28 10:10:34(UT)
Toshihiko Ikemura (D345mmfl=1717mm BJ-52L)池村俊彦

[T.Ikemura Shinshiro Aichi JAPAN]
≪愛知県新城市　池村俊彦≫
2021/11/27 11:52:34(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/11/26 11:45:30(UT)
Toshihiko.Tanaka (TOA130 BJ-53C)田中利彦


[Toshihiko.Tanaka (Nabari Mie Japan)]
≪三重県 名張市　田中利彦≫
2021/11/18 09:31:18(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/11/10 09:34:08(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/11/07 09:22:45(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/11/06 10:52:31(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/11/05 10:05:41(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/11/04 09:23:40(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/11/03 09:26:43(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/11/02 10:40:28(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/10/30 09:17:35(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/10/29 09:36:12(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/10/29 09:29:24(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/10/28 09:38:52(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/10/26 11:15:04(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/10/26 09:54:30(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/10/24 09:26:01(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/10/06 11:40:28(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/10/03 09:37:32(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/10/01 10:49:45(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/09/28 09:54:44(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/09/18 12:28:24(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/09/09 11:40:22(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/09/09 10:45:17(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/09/02 10:48:27(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/08/30 10:52:35(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/08/28 11:42:13(UT)
Toshihiko Ikemura (D345mmfl=1717mm BJ-52L)池村俊彦

[T.Ikemura Shinshiro Aichi JAPAN]
≪愛知県新城市　池村俊彦≫
2021/08/28 11:04:14(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/08/27 11:47:38(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/08/10 12:16:20(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/08/04 12:41:10(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/08/03 21:54:11(UT)
Mikio Yokokawa(D250mmF4.8 Newton)横川幹夫

≪宮城県気仙沼市　横川幹夫≫
2021/07/12 15:44:25(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/06/29 13:28:36(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/06/09 14:39:11(UT)
Toshihiko Ikemura (D345mmfl=1717mm BJ-52L)池村俊彦

[T.Ikemura Shinshiro Aichi JAPAN]
≪愛知県新城市　池村俊彦≫
2021/06/07 15:03:24(UT)
Yoshikane Mizuno (D320mm fl=1740mm )水野義兼


[Yoshikane Mizuno (Kani Gifu Japan)]
≪岐阜県 可児市　水野義兼≫
2021/05/09 16:16:39(UT)
Toshihiko Ikemura (D345mmfl=1717mm BJ-52L)池村俊彦

[T.Ikemura Shinshiro Aichi JAPAN]
≪愛知県新城市　池村俊彦≫
2021/04/11 16:59:24(UT)
Toshihiko Ikemura (D345mmfl=1717mm BJ-52L)池村俊彦

[T.Ikemura Shinshiro Aichi JAPAN]
≪愛知県新城市　池村俊彦≫
2015/07/17 20:09:33(UT)
Toshihiko.Tanaka(Sky90 f=410mm) 田中利彦


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/12/26 10:20:00(UT)
Toshihiko.Tanaka(130mm refractor) 田中利彦


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/12/19 10:20:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/11/19 11:25:00(UT)
Toshihiko.Tanaka(130mm refractor) 田中利彦


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/10/01 11:35:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/09/22 12:05:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/09/08 13:30:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/08/21 13:55:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/08/03 13:58:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/07/30 13:10:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/07/25 14:15:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/07/11 13:10:00(UT)
Toshihiko.Tanaka (130mm refractor)


[Toshihiko.Tanaka (Igaueno Mie Japan)]
≪三重県 伊賀上野　田中利彦≫
2008/06/30 01:38:00(UT)
David Arditti (280mm SC)
I thought this comet would be reasonably easy, since it is mentioned in "Sky at Night" magazine as varying from mag. 12 to 10 over July, but in fact it is astonishingly faint, if I have got the correct object, which I think I have, as it is right on predicted position.
I can't easily estimate the magnitude as it is below the limit of TheSky6, mag.16. I compared the view with the Digitised Palomar Sky Survey, which goes down to 19, and it is comparable with faint stars in that, so it seems to be about mag. 18. These were taken with a CLS filter, but the unfiltered image was similar, but noisier.

[David Arditti: Edgware Middlesex HA8 5LW: United Kingdom]
Comet Section